diff --git a/Lib/test/test_py3kwarn.py b/Lib/test/test_py3kwarn.py
index 1a65323..d64d66a 100644
--- a/Lib/test/test_py3kwarn.py
+++ b/Lib/test/test_py3kwarn.py
@@ -123,6 +123,13 @@
         with catch_warning() as w:
             self.assertWarning(buffer('a'), w, expected)
 
+    def test_file_xreadlines(self):
+        expected = ("f.xreadlines() not supported in 3.x, "
+                    "try 'for line in f' instead")
+        with file(__file__) as f:
+            with catch_warning() as w:
+                self.assertWarning(f.xreadlines(), w, expected)
+
 
 class TestStdlibRemovals(unittest.TestCase):